Part B Compare the mass of the magnesium strip from test tube 1 with the initial mass of the same strip measured in task 1,
part A. Is the mass the same, or is it different? If it's different, explain what may have caused the difference.

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

What does the symbol (–hfus) indicate in a phase change?